648248829 has 8 divisors (see below), whose sum is σ = 864452352. Its totient is φ = 432105600.

The previous prime is 648248807. The next prime is 648248831. The reversal of 648248829 is 928842846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 648248829 - 2⁷ = 648248701 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648248429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26029 + ... + 44429.

It is an arithmetic number, because the mean of its divisors is an integer number (108056544).

Almost surely, 2^648248829 is an apocalyptic number.

It is an amenable number.

648248829 is a deficient number, since it is larger than the sum of its proper divisors (216203523).

648248829 is a wasteful number, since it uses less digits than its factorization.

648248829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30147.

The product of its digits is 1769472, while the sum is 51.

The square root of 648248829 is about 25460.7311167610. The cubic root of 648248829 is about 865.4604914415.

The spelling of 648248829 in words is "six hundred forty-eight million, two hundred forty-eight thousand, eight hundred twenty-nine".